P2175 OBD-II Trouble Code: Throttle Actuator Control System Low Airflow Detected

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Cost of diagnosing the P2175 code

P2175 is a diagnostic trouble code (DTC) for "Throttle Actuator Control System Low Airflow Detected". This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation. Our certified mobile mechanics can come to your home or office to perform the Check Engine Light diagnostic for $70.00. Once we are able to diagnose the problem, you will be provided with an upfront quote for the recommended fix and receive $30.00 off as a credit towards the repair. All our repairs are backed by our 12-month / 12,000-mile warranty.

Cars Estimate Credit towards follow-up repair Earliest Availability
Ford$70.00$30.00
Toyota$70.00$30.00
BMW$70.00$30.00
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Check Engine Light

P2175 code definition

Throttle Actuator Control System Low Air Flow Detected

What the P2175 code means

P2175 is an OBD-II generic code for the engine control module (ECM) detecting that the air flow into the engine was not at specifications when comparing the expected amount for the throttle angle to the amount of air entering as detected by the mass air flow sensor.

What causes the P2175 code?

  • The amount of air is restricted by a clogged air filter.

  • The air flow sensor is shorted to ground or power.

  • The throttle position sensor is not as specified causing the code.

What are the symptoms of the P2175 code?

  • The Check Engine Light will be illuminated and the code is set in the ECM memory as a fault.

  • The engine may lack power, surge, or have limited throttle control.

How does a mechanic diagnose the P2175 code?

  • Scans for codes and documents the code in the ECM, then looks at the freeze frame data for failure

  • Checks the air filter and intake tube for restrictions

  • Checks the throttle for obstructions

  • Follows the manufacturer pinpoint tests for the diagnosis and replacement of the air flow sensor

Common mistakes when diagnosing the P2175 code?

  • Clearing ECM memory codes before checking the freeze frame data for the main failure problem, so the failure may be duplicated and repaired

  • Failing to clear the ECM codes after the codes are fixed

  • Replacing the air flow sensor without verifying the sensor has a problem

How serious is the P2175 code?

Code P2175 is a code indicating that the engine is not getting the proper air flow into the engine when comparing the throttle opening and the air flow sensor for the amount of air that should be getting into the engine. The Check Engine Light and low power condition will cause the engine to fail emissions testing.

What repairs can fix the P2175 code?

Additional comments for consideration regarding the P2175 code

Code P2175 is for a code that is for reduced air flow getting into the engine and can be caused by an aftermarket oil bath filter that contaminates the air flow sensor, which will lead to the sensor not detecting the amount of air entering the engine.

Regular cleaning of the air flow sensor can correct the problem temporarily. Installing a factory paper-style filter and cleaning the air flow sensor could also correct this condition.

Need help with a P2175 code?

YourMechanic offers certified mobile mechanics who will come to your home or office to diagnose and repair your vehicle. Get a quote and book an appointment online or speak to a service advisor at 1-800-701-6230.

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AUDIE

30 years of experience
73 reviews
AUDIE
30 years of experience
Audie was very nice and knowledgeable. I can’t give him 5 stars because I have not heard back from him about the new quote to repair the problem with my truck. Last time I had contact with him was 9/25/2018. I also called my mechanic yesterday 10/2/2018 and they never called back . So I just requested a new quote 10/3/2018. We shall see what happens. Thank you Audie for finding the problem in an hour when a Nameless auto shop couldn’t do it in 3 weeks.
1996 CHEVROLET TAHOE - CHECK ENGINE LIGHT IS ON - HENDERSON, NEVADA

Jerimiah

16 years of experience
207 reviews
Jerimiah
16 years of experience
Very knowledgeable
2005 GMC ENVOY - CHECK ENGINE LIGHT IS ON - HENDERSON, NEVADA

Sam

12 years of experience
53 reviews
Sam
12 years of experience
Sam was professional, thorough, and knowledgeable. Following my reservation, he made contact to better understand the problems he’d address at my appointment. He arrived on time, was polite, and prepared to work. He took his time explaining the diagnostic results and his recommendations. I will recommend his services to others. without hesitation.
2008 SATURN ASTRA - CHECK ENGINE LIGHT IS ON - OKLAHOMA CITY, OKLAHOMA

Peter

40 years of experience
1095 reviews
Peter
40 years of experience
Thanks great service
2011 CADILLAC SRX - CHECK ENGINE LIGHT IS ON - SCOTTSDALE, ARIZONA

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